66734888 has 48 divisors (see below), whose sum is σ = 139618080. Its totient is φ = 29876000.

The previous prime is 66734867. The next prime is 66734893. The reversal of 66734888 is 88843766.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68243 + ... + 69213.

It is an arithmetic number, because the mean of its divisors is an integer number (2908710).

Almost surely, 2^66734888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66734888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69809040).

66734888 is an abundant number, since it is smaller than the sum of its proper divisors (72883192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66734888 is a wasteful number, since it uses less digits than its factorization.

66734888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1055 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 66734888 is about 8169.1424274522. The cubic root of 66734888 is about 405.6183978625.

The spelling of 66734888 in words is "sixty-six million, seven hundred thirty-four thousand, eight hundred eighty-eight".